hard-line vs inflexible

hard-line and inflexible both are adjectives.

Word	Noun	Adjective	Verb	Adverb
hard-line	No	Yes	No	No
inflexible	No	Yes	No	No

hard-line (adjective)	inflexible (adjective)
firm and uncompromising	resistant to being bent
	incapable of change
	not making concessions
	incapable of adapting or changing to meet circumstances